Direct selling companies are a great way for you to work around your existing commitments to earn extra money. You can choose the hours you work and how much you're willing to invest from your own resources into your venture. The best way to get involved with this type of activity is to work with a company that is part of the equivalent of the U.K.'s Direct Selling Association. Alternatively, make sure you work with organizations that are reputable.
Young students who are good at studies and want to use their academic talent for the good of others can use online tutoring as one of the methods to earn on the internet. There are sites where you can register as a teacher, and there are many online educational based companies that need students to offer their teaching services online. You can seek such educational companies and after proving your credibility as a teacher can offer teaching services online. Once you have cleared the basic assessments to act as an online tutor, you will get hired by the online tutoring company. Some of the sites that offer this service include tutor.com, wiziq.com, tutorvista.com, and others.